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Urgent help needed - display won't start after changing Ram

Nov 30, 2020
41 (0.05/day)
Hey guys. Yesterday I was on a thread here and commenters suggested I replace ram slots. I had have 3 sticks and commenters suggested I use 2 in dual mode.
Since last night my display won't start.
Things I've tried:
1. Tried 3 different hdmi cables
2. Placed the ram sticks correctly, tried 3, 2 and 1.
3. Tried my previous graphics card which is seen here.
What do I do?

Aug 12, 2019
1,009 (0.80/day)
System Name Custom
Processor i9 9900k
Motherboard Gigabyte Z390 arous master
Cooling corsair h150i
Memory 4x8 3200mhz corsair
Video Card(s) Galax RTX 3090 EX Gamer White OC
Storage 500gb Samsung 970 Evo PLus
Display(s) MSi MAG341CQ
Case Lian Li Pc-011 Dynamic
Audio Device(s) Arctis Pro Wireless
Power Supply 850w Seasonic Focus Platinum
Mouse Logitech G403
Keyboard Logitech G110
clear cmos pull out the motherboard battery to see if it works
Nov 30, 2020
41 (0.05/day)
Update: I purchased new ram sticks and everything seems alright for now
Nov 19, 2005
399 (0.06/day)
System Name Gamer
Processor Ryzen 7 3800XT
Motherboard Gigabyte X570 Aorus Elite WIFI
Cooling Apogee XL, MCP655, MCR360, Micro-rez
Memory 2x16GB G.Skill DDR4-3600 CL16
Video Card(s) Red Dragon RX 6800 XT
Storage WD SN850 1TB & SN750 1TB
Display(s) LG 32GK650F-B 32" 1440p 144Hz
Case Rocketfish (Lian Li) full ATX
Power Supply Seasonic Focus GM750
VR HMD HP WMR 1440^2
Software Win10 Pro 64bit
Read your motherboard manual & see which slots to use. Most newer boards say two sticks go in slots A2/B2. Your RAM in the photo above is in slots A1/B1.